Heart rate variability changes during pregnancy: an observational study

Alteration of skin laser-Doppler flux response to local cooling in gestational hypertension

“…Nevertheless, our results in resting conditions did not reveal any significant difference between the The results of HRV analysis in resting conditions are in accordance with the majority of studies involving nonhypertensive pregnancy, which have shown a decrease in both HF power values [2] and an increase in LF/HF coefficient [4,8,19,28] for non-hypertensive pregnant women. These findings are interpreted as a decreased parasympathetic activity level.…”

“…Most studies dealing with autonomic nervous system changes during normal pregnancy are based on heart rate and blood pressure variability comparing non-pregnant with pregnant women. However, the results are controversial with regard to the estimated level of sympathetic and parasympathetic reactivity based on standardized heart variability indices [2,4,8,19,28].…”

Prophylactic glycopyrrolate prevents bradycardia after spinal anesthesia for Cesarean section: a randomized, double-blinded, placebo-controlled prospective trial with heart rate variability correlation

“…Heart rate variability analyses via 13 parameters measured beat-tobeat variations in R-R intervals. Details of these HRV analyses appear in previous publications [7,8].…”

Physiological events during parturition and possibilities for improving puppy survival: a review

“…During normal parturition, uterine contractions induce an increase in circulating blood volume as blood restricted to the uterus is released into the general circulation, and as parturition nears completion, there is reduced compression of the caudal vena cava which allows an increase in cardiac output and arterial blood pressure (Chamchad et al, 2007).…”